How to stop macOS Dock from showing all recently opened apps
Here's how to get them out of the Mac computer Dock, and keep them off
Apple users are used to having apps stored in the dock, the stretch of real estate across the bottom of their Mac computers, from the iMac to the MacBook Air. There's also a space to the right that shows programs open that are in use as well.
But sometimes apps show up that have been closed — and still remain in the dock. You can hold the icon, pull it out of the dock, and make it disappear. That won't, however, make the pattern from repeating.
There is though a way to keep recently opened apps from taking up permanent residence in the Dock through Big Sur.
To start, know that by taking this step you're not permanently removing the application from your Mac, nor are you taking a step that's not reversible should you want to bring this feature back as well.
You can stop apps from taking residence in the Mac DockGearBrain
You'll find that once you uncheck this box that any recently opened, now closed, applications in the Dock that had been stored there will actually disappear.
That's all you have to do. We suppose Apple presents this option as a way to quickly find, and use, applications people frequently open that aren't native to the Dock, from Preview to Zoom. For those who find they want a less cluttered Dock, though, this is the avenue to take.